Why? If you automatize away (regardless of whether it's feasible or not) all the workers, what's stop them for cutting them out of the equation? Why can't they just trade assets between themselves, maintaining a small slave population that does machine maintenance for food and shelter and screwing the rest? Why do you think they still need us if they own both the means for the production as well as labor to produce? That would be a post-labour scarcity economy, available only for the wealthy and with the rest of us left to rot. If you have assets like land, materials, factories you can participate, if you don't, you can't

While I don't think that this is feasible technologically yet by any means, I think this is what the rich are huffing currently. They want to be independent from us because they are threatened by us.

They want you to owe your soul to the company store, to live hand-to-mouth by their largess.